Laboratory analysis in mining refers to the systematic scientific examination and testing of geological samples — including rock cores, chips, soils, water, and process streams — to determine the chemical composition, mineralogy, physical properties, and economic viability of ore materials. In bauxite mining, laboratory analysis focuses on measuring alumina (Al₂O₃) content, reactive silica, iron oxide (Fe₂O₃), and moisture levels to assess ore quality and refinery suitability. In gold mining, fire assay is the predominant analytical technique used to quantify gold grades in parts per million (ppm) or grams per tonne (g/t), often complemented by atomic absorption spectroscopy (AAS) and inductively coupled plasma mass spectrometry (ICP-MS). Iron ore laboratory analysis assesses total iron (Fe) content, silica, alumina, phosphorus, sulfur, and moisture to meet strict customer and blast furnace specifications. For diamond mining, laboratory examination involves the identification, sorting, and valuation of recovered rough diamonds based on size, shape, clarity, color, and carat weight. Laboratory analysis is integral to every stage of the mining value chain — from exploration and resource estimation through feasibility studies, mine planning, production optimization, and environmental monitoring. Analytical quality assurance and quality control (QAQC) protocols, including the use of certified reference materials, blanks, and duplicate samples, are essential to ensure the accuracy, precision, and repeatability of laboratory results. Accredited commercial laboratories and on-site mine laboratories both play important roles in supporting timely and reliable analytical data for decision-making.
